Results 21 to 30 of about 452,391 (242)

Modeling of grain-oriented Si-steel and amorphous alloy iron core under ferroresonance using Jiles–Atherton hysteresis method

open access: yesAIP Advances, 2018
Amorphous alloy is increasingly widely used in the iron core of power transformer due to its excellent low loss performance. However, its potential harm to the power system is not fully studied during the electromagnetic transients of the transformer ...
Wenxia Sima   +4 more
doaj   +1 more source

ANALIZA ZAKŁÓCEŃ W SIECIACH ELEKTROENERGETYCZNYCH WYWOŁANYCH WYŁADOWANIAMI PIORUNOWYMI

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2014
W artykule przedstawiono złożoność problematyki analizy stanów nieustalonych napięć pojawiających się w układzie elektroenergetycznym wskutek bezpośrednich wyładowań piorunowych do elementów konstrukcyjnych linii napowietrznej.
Mariusz Benesz, Rafał Tarko
doaj   +1 more source

Synthesis of a system for secondary control of a rotor with an electromagnetic bearing

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The control system for rotor electromagnetic suspension is considered. The parametrical synthesis of regulators is made by the method of the secondary control systems.
Yu. A. Makarichev   +2 more
doaj   +1 more source

A novel superimposed component‐based protection method for multi‐terminal transmission lines using phaselet transform

open access: yesIET Generation, Transmission & Distribution, 2023
This paper presents a novel protection method for transmission lines that estimates the superimposed component phasor using phaselet transform. The phaselet transform computes the phasors over variable‐lenfgth data window at the instant of a fault, so it
Sajad Ansari, Navid Ghaffarzadeh
doaj   +1 more source

General issues of ensuring electromagnetic compatibility of aircraft on-board equipment [PDF]

open access: yesE3S Web of Conferences
The article examines the effect of electromagnetic interference on the electrical components of the aircraft from the point of view of external and internal electromagnetic environments. The external electromagnetic environment consists of high-intensity
Volkova Tatiana, Ou Jing
doaj   +1 more source

Optimization and Transient Analysis of Distributed Asynchronous Condenser

open access: yesIEEE Access, 2022
After the high proportion of new energy is connected, the decrease of the proportion of synchronous machine in power system will cause a series of stability hazards, such as the lack of inertia.
Zhipeng Liu   +4 more
doaj   +1 more source

Low-Frequency Electromagnetic Transients Characterization Using Stockwell Transform

open access: yesApplied Sciences
This paper investigates characterization of low-frequency electromagnetic transients occurring in power networks with the Stockwell transform (S-transform). Three characteristic cases of real network events are considered.
Adnan Mujezinović   +3 more
doaj   +1 more source

Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei

open access: yesThe Astrophysical Journal, 2023
The origin of stellar-mass black hole mergers discovered through gravitational waves is being widely debated. Mergers in the disks of active galactic nuclei (AGNs) represent a promising source of origin, with possible observational clues in the ...
Hiromichi Tagawa   +4 more
doaj   +1 more source

Manipulating Interfacial Stability via Preferential Absorption for Highly Stable and Safe 4.6 V LiCoO2 Cathode

open access: yesNano-Micro Letters
Highlights A novel electrolyte design strategy for high voltage and high safe LiCoO2 (LCO) cathode based on highest occupied molecular orbital and LCO absorption energy descriptor was proposed.
Long Chen   +8 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

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